syzbot

BTRFS critical (device loop0): entry offset 1060864, bytes 4182016, bitmap no
BTRFS info (device loop0): block group has cluster?: no
BTRFS info (device loop0): 2 blocks of free space at or bigger than bytes is
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WARNING: CPU: 1 PID: 4308 at fs/btrfs/volumes.c:3259 btrfs_remove_chunk+0x1158/0x17b0 fs/btrfs/volumes.c:3259
Modules linked in:
CPU: 1 PID: 4308 Comm: syz-executor335 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btrfs_remove_chunk+0x1158/0x17b0 fs/btrfs/volumes.c:3259
lr : btrfs_remove_chunk+0x1158/0x17b0 fs/btrfs/volumes.c:3259
sp : ffff800020807700
x29: ffff800020807860 x28: ffff0000c068b2a0 x27: 0000000000000001
x26: ffff8000208077a0 x25: ffffffffffffffe4 x24: 1fffe000180d165d
x23: ffff0000c068b2ec x22: 0000000000690000 x21: dfff800000000000
x20: 0000000000000000 x19: 0000000000000000 x18: ffff800011a7bd00
x17: 0000000000000000 x16: ffff8000082d1c1c x15: 0000000000000000
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100
x11: ff008000081913ec x10: 0000000000000000 x9 : 3cb8bb37a05c3900
x8 : 3cb8bb37a05c3900 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800020807198 x4 : ffff800015154740 x3 : ffff80000852df5c
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 btrfs_remove_chunk+0x1158/0x17b0 fs/btrfs/volumes.c:3259
 btrfs_relocate_chunk+0x24c/0x364 fs/btrfs/volumes.c:3389
 __btrfs_balance+0x1390/0x1af8 fs/btrfs/volumes.c:4092
 btrfs_balance+0xa44/0xe20 fs/btrfs/volumes.c:4468
 btrfs_ioctl_balance+0x3c0/0x5f8 fs/btrfs/ioctl.c:4531
 btrfs_ioctl+0xac4/0xbd0 fs/btrfs/ioctl.c:5570
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 69648
hardirqs last  enabled at (69647): [<ffff800008307d34>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261
hardirqs last disabled at (69648): [<ffff8000119153e0>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (69594): [<ffff8000081a8dc0>] softirq_handle_end kernel/softirq.c:421 [inline]
softirqs last  enabled at (69594): [<ffff8000081a8dc0>] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:606
softirqs last disabled at (69585): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:612
---[ end trace 0000000000000000 ]---
BTRFS info (device loop0: state A): dumping space info:
BTRFS info (device loop0: state A): space_info DATA+METADATA has 7962624 free, is not full
BTRFS info (device loop0: state A): space_info total=11534336, used=61440, pinned=0, reserved=8192, may_use=1863680, readonly=1638400 zone_unusable=0
BTRFS info (device loop0: state A): space_info SYSTEM has 4190208 free, is not full
BTRFS info (device loop0: state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=0, readonly=0 zone_unusable=0
BTRFS info (device loop0: state A): global_block_rsv: size 1441792 reserved 1437696
BTRFS info (device loop0: state A): trans_block_rsv: size 262144 reserved 262144
BTRFS info (device loop0: state A): chunk_block_rsv: size 0 reserved 0
BTRFS info (device loop0: state A): delayed_block_rsv: size 0 reserved 0
BTRFS info (device loop0: state A): delayed_refs_rsv: size 524288 reserved 163840
BTRFS: error (device loop0: state A) in btrfs_remove_chunk:3259: errno=-28 No space left
BTRFS info (device loop0: state EA): forced readonly
BTRFS info (device loop0: state EA): 1 enospc errors during balance
BTRFS info (device loop0: state EA): balance: ended with status: -30